(Photo: Allison Meier)
Should you think outside of the box? Yes. But first, explore the world of knowledge within it. This architectural gem is The Square Head, a sculpture and functional library building designed by Sasha Sonso. It was completed in 2002 and now serves as part of the central library of Nice, France.
Although it looks like a black cube, the panels on the face are actually windows. It is 92 feet tall and has 3 interior floors.
-via Marginal Revolution